Date: Fri, 30 May 1997 17:27:33 -0700 From: "Jin Guojun[ITG]" <jin@george.lbl.gov> To: hardware@freebsd.org Subject: SMP (3.0-970527-SNAP) on dual pentium machines Message-ID: <199705310027.RAA29428@george.lbl.gov>
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Does any one have tested some dual pentium motherboards? I have two different dual pentium motherboards: 1) ASUS P/I-P65UP5 with C-P55T2D 2) TYAN S1563D neither of them really gets worked for SMP. Here is the testing result by using pthread library -lc_r: ----------------------- FreeBSD with single CPU: 60 /data/src: vfft mri.b128 > /dev/null 9.7u 0.1s 0:09.95 99.3% 97+11132k 0+0io 0pf+0w FreeBSD with dual CPU + pthread (failure SMP): 62 /data/src: vfft.mt < mri.b128 > /dev/null 9.5u 0.2s 0:09.83 99.1% 77+11822k 0+0io 0pf+0w ----------------------- Solaris 2.5.1.u8 with single CPU: 67 /home/data/src: vfft mri.b128 > /dev/null 12.0u 0.0s 0:13 87% 0+0k 0+0io 0pf+0w Solaris 2.5.1.u8 with dual CPU + thread (SMP): 69 /home/data/src: vfft.mt mri.b128 > /dev/null 12.0u 0.0s 0:07 168% 0+0k 0+0io 0pf+0w ----------------------- We can see that Solaris does make SMP work, but FreeBSD 3.0-SNAP does not. Does this fail at pthread library (-lc_r)? I have not use fork() for a while. I will test it sometimes later. I saw some message early that said SMP works. Would some one please tell me how was the SMP tested (fork() or pthread)? Thanks, -Jin
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